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Download full textDeke, John; Dragoset, Lisa; Moore, Ravaris – National Center for Education Evaluation and Regional Assistance, 2010
In randomized controlled trials (RCTs) where the outcome is a student-level, study-collected test score, a particularly valuable piece of information is a study-collected baseline score from the same or similar test (a pre-test). Pre-test scores can be used to increase the precision of impact estimates, conduct subgroup analysis, and reduce bias…
Descriptors: Achievement Gains, Scores, Pretests Posttests, Regression (Statistics)
